Type doStructSpecifier(TreeNode *p) { //待完成
//printf("doStructSpecifier\n");
//printf("production rule:%d\n", p->productionRule);
switch (p->productionRule) {
case 1: {
TreeNode *p2 = p->firstChild->rightBrother;
TreeNode *p4 = p2->rightBrother->rightBrother;
char *tagname = doOptTag(p2);
if (tagname != NULL) { //有标签名，把它加入结构体表中
if (searchStruct(tagname) != NULL || searchAll(tagname) != NULL) {
printf("Error type 16 at line %d: struct tag %s is same as other struct tag or variable name\n", p->line, tagname);
return NULL;
}
structTableElement *str = (structTableElement *)malloc(sizeof(structTableElement));
str->name = tagname;
str->type = (Type)malloc(sizeof(struct Type_));
str->type->kind = STRUCTURE;
str->type->u.var = doDefList(p4, 1);
insertStruct(str);
return str->type;
} else {
Type temptype = (Type)malloc(sizeof(struct Type_));
temptype->kind = STRUCTURE;
temptype->u.var = doDefList(p4, 1);
//showStructMember(temptype);
return temptype;
}
break;
}
case 2: {
//Tag要在之前定义过才能有效，去结构体表中查找
TreeNode *p2 = p->firstChild->rightBrother;
char *tagname = doTag(p2);
structTableElement *str = searchStruct(tagname);
if (str == NULL) {
printf("Error type 17 at line %d: struct tag %s undefined\n", p->line, tagname);
return NULL;
} else { //查找到，就将表中的type返回
//showStructMember(str->type);
return str->type;
}
break;
}
}
}
void doCompSt(TreeNode *p) {
//printf("doCompSt\n");
//printf("TreeNode->state:%s\n", p->state);
into_a_layer();
TreeNode *p2 = p->firstChild->rightBrother;
TreeNode *p3 = p2->rightBrother;
doDefList(p2, 0);
doStmtList(p3);
out_of_a_layer();
}
void doDefList(TreeNode *p) {
//printf("doDefList\n");
//printf("TreeNode->state:%s\n", p->state);
switch (p->productionRule) {
case 1:{
TreeNode *p1 = p->firstChild;
TreeNode *p2 = p1->rightBrother;
doDef(p1);
doDefList(p2);
break;
}
case 2:
break;
}
}
varElement* doDefList(TreeNode *p, int ifStruct) {
//printf("doDefList\n");
//printf("TreeNode->state:%s\n", p->state);
switch (p->productionRule) {
case 1:{
TreeNode *p1 = p->firstChild;
TreeNode *p2 = p1->rightBrother;
varElement *ele1 = doDef(p1, ifStruct);
varElement *ele2 = doDefList(p2, ifStruct);
if (ifStruct == 1) { //是结构体的成员处理
while (ele1->next != NULL) { //找到这个Def定义出的的最后一个varElement
ele1 = ele1->next;
}
ele1->next = ele2; //和DefList的varElement链串联起来，返回
return ele1;
}
break;
}
case 2:{
return NULL;
break;
}
}
}
